CN114764159A - Reflector plate, preparation method thereof, backlight module and display device - Google Patents

Reflector plate, preparation method thereof, backlight module and display device Download PDF

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Publication number
CN114764159A
CN114764159A CN202110042179.7A CN202110042179A CN114764159A CN 114764159 A CN114764159 A CN 114764159A CN 202110042179 A CN202110042179 A CN 202110042179A CN 114764159 A CN114764159 A CN 114764159A
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China
Prior art keywords
reflector plate
reflector
backlight module
partition structure
plate
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CN202110042179.7A
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Chinese (zh)
Inventor
代海龙
马骋
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BOE Technology Group Co Ltd
K Tronics Suzhou Technology Co Ltd
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BOE Technology Group Co Ltd
K Tronics Suzhou Technology Co Ltd
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Priority to CN202110042179.7A priority Critical patent/CN114764159A/en
Priority to US17/511,451 priority patent/US11841581B2/en
Publication of CN114764159A publication Critical patent/CN114764159A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

The embodiment of the invention provides a reflector plate, a preparation method thereof, a backlight module and a display device, and solves the problem that dark frames or bright edges appear during display due to less light reflected by corner areas on the side surface of the reflector plate. The reflective sheet includes: the partition structure is arranged on the side surface of the reflector plate and bends the side surface of the reflector plate with a preset slope; the partition structure comprises a plurality of dotted lines which are horizontally or vertically arranged in parallel.

Description

Reflector plate, preparation method thereof, backlight module and display device
Technical Field
The invention relates to the technical field of display, in particular to a reflector plate, a preparation method of the reflector plate, a backlight module and a display device.
Background
With the development of display technology, liquid crystal displays have become the most common display devices, and liquid crystal itself does not emit light, and it displays graphics or characters as a result of its modulation of light. The liquid crystal display comprises a backlight module which is a light source positioned at the back of the liquid crystal, and the luminous effect of the backlight module directly influences the visual effect of the liquid crystal display module. As shown in fig. 1, the reflective sheet is applied to a backlight module, and the reflective sheet is generally rectangular and can angle the sides and corners of the reflective sheet to form an inclined plane with a certain slope or an arc surface with a certain curvature, so that the sides and corners of the reflective sheet can reflect light emitted from a point light source more effectively.
Disclosure of Invention
In view of this, the invention provides a reflector plate, a preparation method thereof, a backlight module and a display device, which solve the problem that dark frames or bright edges appear during display due to less light reflected by corner regions on the side surfaces of the reflector plate.
An embodiment of the present invention provides a reflective sheet, including:
the partition structure is arranged on the side surface of the reflector plate and bends the side surface of the reflector plate with a preset slope;
the partition structure comprises a plurality of dotted lines which are horizontally or vertically arranged in parallel.
In one embodiment, the ratio of the imaginary line to the real line is 1 or more.
In one embodiment, the side surface of the reflective sheet has a slope gradually increasing from the bottom.
In one embodiment, the reflective sheet satisfies the following formula:
Figure BDA0002896331110000021
5mm＜＜H1＜H2＜…＜Hn；
wherein alpha isiIs the included angle of adjacent folded edges on the side surface of the reflector plateWherein i is 1, 2. cndot. -; h1、H2···HnThe vertical height of each partition structure and the bottom of the reflector plate is respectively set; n is the number of the partition structures.
In one embodiment, the bottom of the reflector plate is provided with a lamp hole.
A method of making a reflective sheet comprising: preparing a partition structure on the side surface of the reflector plate, wherein the partition structure enables the side surface of the reflector plate to be bent with a preset slope;
The partition structure comprises a plurality of dotted lines which are horizontally or vertically arranged in parallel.
In one embodiment, the side surfaces of the reflective sheet have a slope gradually increasing from the bottom.
A backlight module includes: the backlight module comprises a back plate, a reflecting plate, a light emitting element, a diffusion plate and a functional film which are sequentially stacked, wherein the reflecting plate forms the bottom surface and the side surface of a light mixing cavity of the backlight module.
In one embodiment, the bottom of the reflector plate is provided with a lamp hole, and the light-emitting element includes an LED strip, wherein a bead of the LED strip is disposed in the lamp hole.
In one embodiment, the functional film includes at least one of a brightness enhancement film, a diffusion film, a quantum dot film, and a blue blocking film.
In one embodiment, the diffusion plate has a light transmittance of 30% to 70%.
A liquid crystal display device comprises any one of the backlight module and a liquid crystal panel arranged on one side of a light-emitting surface of the backlight module.
According to the reflector plate, the preparation method thereof, the backlight module and the display device provided by the embodiment of the invention, the reflector plate comprises the partition structure arranged on the side surface of the reflector plate, and the partition structure enables the side surface of the reflector plate to be bent with a preset slope; the partition structure comprises a plurality of dotted lines which are horizontally or vertically arranged in parallel. According to the invention, the partition structure is arranged on the side surface of the reflector plate, and the side surface of the reflector plate is bent according to the preset slope, so that light can be uniformly irradiated on the side surface of the reflector plate, and the situation that the side surface of the reflector plate is not irradiated by light or only a small amount of light can be irradiated by the light is prevented, so that light can be effectively guided to be diffused, the problem that a dark frame or a bright edge occurs in the display process due to the fact that the amount of light reflected by the corner area of the side surface of the reflector plate is small is solved, and the display effect is improved.
Drawings
Fig. 1 is a schematic view illustrating a light emitting principle of a liquid crystal display device according to the prior art.
Fig. 2 is a schematic structural diagram of a reflector plate according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram illustrating a ratio of a partition line to a non-partition line provided in an embodiment of the present invention.
Fig. 4 is a schematic structural diagram illustrating a slope of a side surface of a reflector in an embodiment of the invention.
Fig. 5 is a schematic structural diagram of a backlight module according to an embodiment of the invention.
Fig. 6 is a schematic structural diagram of an lcd device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem that the light reflected by the corner of the reflector plate is less, which causes the occurrence of dark frames or bright edges when the liquid crystal display displays, the prior art generally adopts a method of punching holes on the side edge of the reflector plate to eliminate the problem of brighter surroundings of the lamp, so that the display looks more uniform in brightness. However, the aperture size is limited, so the punching extinction effect is not ideal, and the problems of bright edges and dark frames around the picture cannot be effectively solved. The side surface of the reflector plate is provided with the partition structure, so that the side surface of the reflector plate is bent at a preset slope, light can be effectively guided to diffuse, and the problems of a dark frame and a bright edge caused by the fact that light cannot be reflected at the corner position of the reflector plate are solved. The specific embodiment is as follows.
Fig. 2 is a schematic structural diagram of a reflector plate according to an embodiment of the present invention. Fig. 3 is a schematic structural diagram illustrating a ratio of a partition line to a non-partition line provided in an embodiment of the present invention.
In an embodiment of the present invention, a reflective sheet is provided, as shown in fig. 2, a partition structure 32 is disposed on a side surface of the reflective sheet, and the partition structure 32 bends the side surface of the reflective sheet with a predetermined slope; wherein the partition structure 32 comprises a plurality of horizontally or vertically arranged parallel dotted lines. Wherein the reflective sheet at the position of the dotted line is cut, and the solid line part between two adjacent dotted lines is not cut. Because the reflector plate of dotted line position department is cut out, and many dotted lines are level or vertical parallel arrangement for the reflector plate can be buckled according to the angle of predetermineeing when buckling, consequently can make the side of reflector plate have the slope of predetermineeing. According to the method, the partition structure 32 is arranged on the side face of the reflector plate, and the side face of the reflector plate is bent according to the preset slope, so that light can be uniformly irradiated on the side face of the reflector plate, and the situation that light cannot be irradiated or only less light can be irradiated on the side face of the reflector plate is prevented, so that light can be effectively guided to diffuse, the problem that a dark frame or a bright edge appears during display due to less light reflected by the corner area of the side face of the reflector plate is solved, and the display effect is improved.
Optionally, the ratio of the virtual to the real of the dashed line is greater than or equal to 1, and as shown in fig. 3, the ratio of the virtual to the real of the dashed line may include: 5:2, 8:2, 10:3, 12:5 and the like, and the virtual-real ratio of the dotted line is set to be greater than or equal to 1, so that the reflector plate is not easy to break when being bent. In addition, the virtual-to-real ratio of the dashed line can be set according to actual requirements, and the invention does not limit the virtual-to-real ratio of the dashed line.
Fig. 4 is a schematic structural diagram illustrating a slope of a side surface of a reflector in an embodiment of the invention.
In an embodiment of the invention, as shown in fig. 4, the slope of the side surface of the reflector plate gradually increases from the bottom, so that the diffusion angle of light rays is increased when the light rays approach the top edge of the reflector plate, and further, the light mixing in the light mixing cavity is more uniform, so that the light rays can be more uniformly irradiated on the diffusion plate, and the problems of a dark frame and a bright edge during display are better solved. Optionally, the slope of the side surface of the reflector plate may be set according to actual requirements, and the slope of the side surface of the reflector plate is not limited in the present invention.
In an embodiment of the present invention, the reflective sheet satisfies the following formula:
Figure BDA0002896331110000041
5mm＜＜H1＜H2＜…＜Hn……………………………………(2)
wherein, as shown in FIG. 4, αiThe included angle of the adjacent folded edges of the side faces of the reflector plate is shown, wherein i is 1, 2. cndot.; h 1、H2···HnThe vertical height of each partition structure 32 and the bottom of the reflector plate; n is the number of partition structures 32. In addition, the included angle of the adjacent folding edge on the side surface of the reflector and the vertical height of the partition structure 32 and the bottom of the reflector can be set according to the actual situation, and the included angle of the adjacent folding edge on the side surface of the reflector and the vertical height of the partition structure 32 and the bottom of the reflector are not limited by the invention.
In an embodiment of the invention, the bottom of the reflector plate is provided with a lamp hole 31 for accommodating a lamp bead, and the lamp bead emits light into the light mixing cavity through the lamp hole 31. So that the light of the lamp bead can completely pass through the lamp hole 31 and irradiate. Optionally, according to different bead lenses, the shape of the lamp hole 31 may be at least one of a circle and a rectangle, or according to actual requirements, the shape of the lamp hole 31 may also be other shapes, and the shape of the lamp hole 31 is not limited in the present invention.
In an embodiment of the present invention, a method for manufacturing the reflective sheet includes: preparing a partition structure 32 on the side surface of the reflector plate, wherein the partition structure 32 bends the side surface of the reflector plate with a preset slope; wherein the partition structure 32 comprises a plurality of horizontally or vertically arranged broken lines in parallel. The reflector plate can be made by a manufacturer or purchased from the outside, and the specific source of the reflector plate is not limited by the invention. Preparing the partition structure 32 on the side surface of the reflector plate comprises cutting and preparing the partition structure 32 on the side surface of the reflector plate by adopting a cutting die integrated forming process. The cutting and preparing of the partition structure 32 by adopting the cutting die integrated forming process is very convenient and has the effect of improving the production efficiency.
The slope is increased gradually from the bottom to the reflector plate side face, so that the angle of diffusion is increased when light is close to the edge of the top of the reflector plate, and light mixing in the light mixing cavity is more uniform, therefore, the light can be more uniformly irradiated on the diffusion plate, and the problems of a dark frame and a bright edge during display are better solved. Optionally, the slope of the side surface of the reflector plate may be set according to actual requirements, and the slope of the side surface of the reflector plate is not limited in the present invention.
Fig. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
In an embodiment of the present invention, as shown in fig. 5, the backlight module includes a back plate 1, a reflective sheet 3, a light emitting device 2, a diffuser plate 4, and a functional film 5, which are sequentially stacked, where the reflective sheet 3 is disposed on a side of the back plate 1 close to the light emitting device 2, and the reflective sheet 3 forms a bottom surface and a side surface of a light mixing cavity of the backlight module. The bottom of the reflector plate 3 is provided with a lamp hole 31, the light-emitting element comprises an LED lamp strip, and a lamp bead of the LED lamp strip is arranged in the lamp hole 31. The lamp beads emit light into the light mixing cavity through the lamp holes 31. So that the light of the lamp bead can completely pass through the lamp hole 31 and irradiate. Optionally, according to different bead lenses, the shape of the lamp hole 31 may be at least one of a circle and a rectangle, or according to actual requirements, the shape of the lamp hole 31 may also be other shapes, and the shape of the lamp hole 31 is not limited in the present invention.
Alternatively, the functional film 5 includes at least one of a brightness enhancement film, a diffusion film, a quantum dot film, and a blue-blocking film, and besides, the kind of the functional film 5 is selected according to the actual situation, and the specific type of the functional film 5 is not limited in the present invention.
Optionally, the light transmittance of the diffusion plate 4 is between 30% and 70%, in addition to which the light transmittance of the diffusion plate 4 is selected according to actual situations, the light transmittance of the diffusion plate 4 is not limited in the present invention.
Fig. 6 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention.
In an embodiment of the invention, as shown in fig. 6, the liquid crystal display device includes the backlight module and the liquid crystal panel 6 in the above embodiment, wherein the liquid crystal panel 6 is disposed on a light emitting surface side of the backlight module.
Alternatively, the liquid crystal display device may be applied to an electronic device such as a television or a computer, and the specific application of the liquid crystal display device is optional, and the specific application of the liquid crystal display device is not limited in the present invention.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art.
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indicators in the embodiments of the present application (such as upper, lower, left, right, front, rear, top, bottom … …) are only used to explain the relative positional relationship between the components, the movement, etc. in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents and the like included within the spirit and scope of the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.

Claims (12)

1. The reflector plate is characterized by comprising a partition structure arranged on the side surface of the reflector plate, wherein the partition structure enables the side surface of the reflector plate to be bent with a preset slope;
the partition structure comprises a plurality of dotted lines which are horizontally or vertically arranged in parallel.
2. The reflector sheet of claim 1, wherein the ratio of the imaginary line to the real line is greater than or equal to 1.
3. The reflector sheet of claim 1, wherein the sides of the reflector sheet have a slope that increases from the bottom.
4. The reflector sheet of claim 1, wherein the reflector sheet satisfies the following equation:
Figure FDA0002896331100000011
5mm＜＜H1＜H2＜…＜Hn；
wherein alpha isiThe included angle of the adjacent folded edges of the side faces of the reflector plate is shown, wherein i is 1, 2. cndot.; h1、H2···HnThe vertical height of each partition structure and the bottom of the reflector plate is respectively set; n is the number of the partition structures.
5. The reflector plate as claimed in claim 1, wherein the bottom of the reflector plate is provided with a lamp hole.
6. A method for preparing a reflector plate, comprising: preparing a partition structure on the side surface of the reflector plate, wherein the partition structure enables the side surface of the reflector plate to be bent with a preset slope;
the partition structure comprises a plurality of dotted lines which are horizontally or vertically arranged in parallel.
7. The method of claim 6, wherein the side surface of the reflector plate has a slope gradually increasing from the bottom.
8. A backlight module, comprising: the back plate, the reflective sheet of any one of claims 1 to 5, the light emitting element, the diffuser plate and the functional film are sequentially stacked, wherein the reflective sheet forms the bottom surface and the side surface of the light mixing cavity of the backlight module.
9. The backlight module as claimed in claim 8, wherein the reflector plate has a bottom opening, and the light emitting device comprises a LED strip, wherein the beads of the LED strip are disposed in the opening.
10. The backlight module as claimed in claim 8, wherein the functional film comprises at least one of a brightness enhancement film, a diffusion film, a quantum dot film, and a blue-blocking film.
11. The backlight module as claimed in claim 8, wherein the diffuser plate has a light transmittance of 30% to 70%.
12. A liquid crystal display device, comprising the backlight module of any one of claims 8 to 11 and a liquid crystal panel disposed on a light-emitting surface side of the backlight module.
CN202110042179.7A 2021-01-13 2021-01-13 Reflector plate, preparation method thereof, backlight module and display device Pending CN114764159A (en)

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US17/511,451 US11841581B2 (en) 2021-01-13 2021-10-26 Reflective sheet and manufacturing method thereof, backlight module, and display device

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